Who was the last King of Portugal?

Dom Manuel II (15 November 1889 – 2 July 1932), "the Patriot" or "the Unfortunate", was the last King of Portugal, ascending the throne after the assassination of his father, King Carlos I, and his elder brother, Luís Filipe, Prince Royal. Before ascending the throne he held the title of Duke of Beja.

On the 1st of February 1908, the royal family was returning from the Ducal Palace in Vila Viçosa to Lisbon. On their way to the royal palace, shots were fired by at least two Portuguese republican activist revolutionaries: Alfredo Luis da Costa and Manuel Buiça. The King was killed; Prince Luís Filipe was mortally wounded; Manuel was hit in the arm; Queen Amélie of Orleans was unharmed. Within days, Manuel was proclaimed King of Portugal. The young King, who had not been groomed to rule, sought to save the fragile position of the Braganza dynasty by dismissing the prime minister, João Franco and his entire cabinet in 1908. The ambitions of various political parties made Manuel's short reign a turbulent one.

The stability of the government deteriorated; seven governments were established and fell in a period of 24 months. The monarchist parties continued to fragment, while the Republican Party continued to gain ground.

The result of a revolution on the 5th of October, 1910 was a coup d’etat, signaling the dissolution of the monarchy and the end of his reign, and Manuel lived the rest of his life in exile in Twickenham, Middlesex, England.